Derek Woollatt

Person

Campbell, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Gas compressor comprising a double acting piston, an elongate chamb...
- Patent number 6,655,935
- Issue date Dec 2, 2003
- Dresser-Rand Company
- Robert Bennitt
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Self-contained, clearance-volume adjustment means for a gas compressor
- Patent number 5,647,730
- Issue date Jul 15, 1997
- Dresser-Rand Company
- Derek Woollatt
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Means for moving a valve within a gas compressor having a straight...
- Patent number 5,564,906
- Issue date Oct 15, 1996
- Dresser-Rand Company
- Robert A. Bennitt
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Over-pressure relief means
- Patent number 5,378,116
- Issue date Jan 3, 1995
- Dresser-Rand Company
- Robert A. Bennitt
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Hydraulically-operated valve assembly
- Patent number 5,190,262
- Issue date Mar 2, 1993
- Dresser-Rand Company
- Derek Woollatt
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Method of injection molding a plastic plate
- Patent number 5,100,606
- Issue date Mar 31, 1992
- Dresser Industries, Inc.
- Derek Woollatt
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of making a flat spring compressor valve
- Patent number 4,984,361
- Issue date Jan 15, 1991
- Dresser Industries
- Derek Woollatt
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Compressor valve with flat spring
- Patent number 4,913,187
- Issue date Apr 3, 1990
- Dresser Industries
- Derek Woollatt
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Compressor and method with an improved inlet and discharge valve ar...
- Publication number 20040018106
- Publication date Jan 29, 2004
- Dresser-Rand Company
- Robert Bennitt
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Gas compressor and method with an improved inlet and discharge valv...
- Publication number 20030133813
- Publication date Jul 17, 2003
- Dresser-Rand Company
- Robert Bennitt
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Derek Woollatt

Person

Patents Grantslast 30 patents

Gas compressor comprising a double acting piston, an elongate chamb...

Self-contained, clearance-volume adjustment means for a gas compressor

Means for moving a valve within a gas compressor having a straight...

Over-pressure relief means

Hydraulically-operated valve assembly

Method of injection molding a plastic plate

Method of making a flat spring compressor valve

Compressor valve with flat spring

Patents Applicationslast 30 patents

Compressor and method with an improved inlet and discharge valve ar...

Gas compressor and method with an improved inlet and discharge valv...